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a80b95ba | 1 | /* Darwin support for GDB, the GNU debugger. |
0b302171 | 2 | Copyright (C) 2008-2012 Free Software Foundation, Inc. |
a80b95ba TG |
3 | |
4 | Contributed by AdaCore. | |
5 | ||
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 3 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program. If not, see <http://www.gnu.org/licenses/>. | |
20 | */ | |
21 | ||
22 | #include "defs.h" | |
23 | #include "top.h" | |
24 | #include "inferior.h" | |
25 | #include "target.h" | |
26 | #include "symfile.h" | |
27 | #include "symtab.h" | |
28 | #include "objfiles.h" | |
29 | #include "gdb.h" | |
30 | #include "gdbcmd.h" | |
31 | #include "gdbcore.h" | |
32 | #include "gdbthread.h" | |
33 | #include "regcache.h" | |
34 | #include "event-top.h" | |
35 | #include "inf-loop.h" | |
36 | #include "gdb_stat.h" | |
37 | #include "exceptions.h" | |
38 | #include "inf-child.h" | |
39 | #include "value.h" | |
40 | #include "arch-utils.h" | |
41 | #include "bfd.h" | |
ece0061f | 42 | #include "bfd/mach-o.h" |
a80b95ba TG |
43 | |
44 | #include <sys/ptrace.h> | |
45 | #include <sys/signal.h> | |
46 | #include <machine/setjmp.h> | |
47 | #include <sys/types.h> | |
48 | #include <unistd.h> | |
49 | #include <signal.h> | |
50 | #include <string.h> | |
51 | #include <ctype.h> | |
52 | #include <sys/param.h> | |
53 | #include <sys/sysctl.h> | |
54 | #include <sys/proc.h> | |
bb00b29d TG |
55 | #include <libproc.h> |
56 | #include <sys/syscall.h> | |
e69860f1 | 57 | #include <spawn.h> |
a80b95ba TG |
58 | |
59 | #include <mach/mach_error.h> | |
60 | #include <mach/mach_vm.h> | |
61 | #include <mach/mach_init.h> | |
62 | #include <mach/vm_map.h> | |
63 | #include <mach/task.h> | |
64 | #include <mach/mach_port.h> | |
65 | #include <mach/thread_act.h> | |
66 | #include <mach/port.h> | |
67 | ||
68 | #include "darwin-nat.h" | |
69 | ||
70 | /* Quick overview. | |
71 | Darwin kernel is Mach + BSD derived kernel. Note that they share the | |
72 | same memory space and are linked together (ie there is no micro-kernel). | |
73 | ||
74 | Although ptrace(2) is available on Darwin, it is not complete. We have | |
75 | to use Mach calls to read and write memory and to modify registers. We | |
76 | also use Mach to get inferior faults. As we cannot use select(2) or | |
77 | signals with Mach port (the Mach communication channel), signals are | |
78 | reported to gdb as an exception. Furthermore we detect death of the | |
79 | inferior through a Mach notification message. This way we only wait | |
80 | on Mach ports. | |
81 | ||
82 | Some Mach documentation is available for Apple xnu source package or | |
83 | from the web. */ | |
84 | ||
85 | ||
86 | #define PTRACE(CMD, PID, ADDR, SIG) \ | |
87 | darwin_ptrace(#CMD, CMD, (PID), (ADDR), (SIG)) | |
88 | ||
89 | extern boolean_t exc_server (mach_msg_header_t *in, mach_msg_header_t *out); | |
90 | ||
91 | static void darwin_stop (ptid_t); | |
92 | ||
bb00b29d TG |
93 | static void darwin_resume_to (struct target_ops *ops, ptid_t ptid, int step, |
94 | enum target_signal signal); | |
95 | static void darwin_resume (ptid_t ptid, int step, | |
96 | enum target_signal signal); | |
97 | ||
98 | static ptid_t darwin_wait_to (struct target_ops *ops, ptid_t ptid, | |
99 | struct target_waitstatus *status, int options); | |
100 | static ptid_t darwin_wait (ptid_t ptid, struct target_waitstatus *status); | |
101 | ||
a80b95ba TG |
102 | static void darwin_mourn_inferior (struct target_ops *ops); |
103 | ||
2ab1c2d9 | 104 | static void darwin_kill_inferior (struct target_ops *ops); |
a80b95ba TG |
105 | |
106 | static void darwin_ptrace_me (void); | |
107 | ||
108 | static void darwin_ptrace_him (int pid); | |
109 | ||
110 | static void darwin_create_inferior (struct target_ops *ops, char *exec_file, | |
111 | char *allargs, char **env, int from_tty); | |
112 | ||
113 | static void darwin_files_info (struct target_ops *ops); | |
114 | ||
bb00b29d TG |
115 | static char *darwin_pid_to_str (struct target_ops *ops, ptid_t tpid); |
116 | ||
117 | static int darwin_thread_alive (struct target_ops *ops, ptid_t tpid); | |
a80b95ba TG |
118 | |
119 | /* Target operations for Darwin. */ | |
120 | static struct target_ops *darwin_ops; | |
121 | ||
122 | /* Task identifier of gdb. */ | |
123 | static task_t gdb_task; | |
124 | ||
125 | /* A copy of mach_host_self (). */ | |
126 | mach_port_t darwin_host_self; | |
127 | ||
128 | /* Exception port. */ | |
129 | mach_port_t darwin_ex_port; | |
130 | ||
a80b95ba TG |
131 | /* Port set. */ |
132 | mach_port_t darwin_port_set; | |
133 | ||
0963b4bd | 134 | /* Page size. */ |
a80b95ba TG |
135 | static vm_size_t mach_page_size; |
136 | ||
137 | /* If Set, catch all mach exceptions (before they are converted to signals | |
138 | by the kernel). */ | |
139 | static int enable_mach_exceptions; | |
140 | ||
bb00b29d TG |
141 | /* Inferior that should report a fake stop event. */ |
142 | static struct inferior *darwin_inf_fake_stop; | |
143 | ||
a80b95ba TG |
144 | #define PAGE_TRUNC(x) ((x) & ~(mach_page_size - 1)) |
145 | #define PAGE_ROUND(x) PAGE_TRUNC((x) + mach_page_size - 1) | |
146 | ||
bb00b29d | 147 | /* This controls output of inferior debugging. */ |
a80b95ba TG |
148 | static int darwin_debug_flag = 0; |
149 | ||
15c19d39 TG |
150 | /* Create a __TEXT __info_plist section in the executable so that gdb could |
151 | be signed. This is required to get an authorization for task_for_pid. | |
152 | ||
153 | Once gdb is built, you can either: | |
154 | * make it setgid procmod | |
155 | * or codesign it with any system-trusted signing authority. | |
156 | See taskgated(8) for details. */ | |
157 | static const unsigned char info_plist[] | |
158 | __attribute__ ((section ("__TEXT,__info_plist"),used)) = | |
159 | "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" | |
160 | "<!DOCTYPE plist PUBLIC \"-//Apple Computer//DTD PLIST 1.0//EN\"" | |
161 | " \"http://www.apple.com/DTDs/PropertyList-1.0.dtd\">\n" | |
162 | "<plist version=\"1.0\">\n" | |
163 | "<dict>\n" | |
164 | " <key>CFBundleIdentifier</key>\n" | |
165 | " <string>org.gnu.gdb</string>\n" | |
166 | " <key>CFBundleName</key>\n" | |
167 | " <string>gdb</string>\n" | |
168 | " <key>CFBundleVersion</key>\n" | |
169 | " <string>1.0</string>\n" | |
170 | " <key>SecTaskAccess</key>\n" | |
171 | " <array>\n" | |
172 | " <string>allowed</string>\n" | |
173 | " <string>debug</string>\n" | |
174 | " </array>\n" | |
175 | "</dict>\n" | |
176 | "</plist>\n"; | |
177 | ||
a80b95ba TG |
178 | static void |
179 | inferior_debug (int level, const char *fmt, ...) | |
180 | { | |
181 | va_list ap; | |
182 | ||
183 | if (darwin_debug_flag < level) | |
184 | return; | |
185 | ||
186 | va_start (ap, fmt); | |
187 | printf_unfiltered (_("[%d inferior]: "), getpid ()); | |
188 | vprintf_unfiltered (fmt, ap); | |
189 | va_end (ap); | |
190 | } | |
191 | ||
192 | void | |
193 | mach_check_error (kern_return_t ret, const char *file, | |
194 | unsigned int line, const char *func) | |
195 | { | |
196 | if (ret == KERN_SUCCESS) | |
197 | return; | |
198 | if (func == NULL) | |
199 | func = _("[UNKNOWN]"); | |
bb00b29d | 200 | |
4f1cdeec | 201 | warning (_("Mach error at \"%s:%u\" in function \"%s\": %s (0x%lx)"), |
bb00b29d | 202 | file, line, func, mach_error_string (ret), (unsigned long) ret); |
a80b95ba TG |
203 | } |
204 | ||
205 | static const char * | |
206 | unparse_exception_type (unsigned int i) | |
207 | { | |
208 | static char unknown_exception_buf[32]; | |
209 | ||
210 | switch (i) | |
211 | { | |
212 | case EXC_BAD_ACCESS: | |
213 | return "EXC_BAD_ACCESS"; | |
214 | case EXC_BAD_INSTRUCTION: | |
215 | return "EXC_BAD_INSTRUCTION"; | |
216 | case EXC_ARITHMETIC: | |
217 | return "EXC_ARITHMETIC"; | |
218 | case EXC_EMULATION: | |
219 | return "EXC_EMULATION"; | |
220 | case EXC_SOFTWARE: | |
221 | return "EXC_SOFTWARE"; | |
222 | case EXC_BREAKPOINT: | |
223 | return "EXC_BREAKPOINT"; | |
224 | case EXC_SYSCALL: | |
225 | return "EXC_SYSCALL"; | |
226 | case EXC_MACH_SYSCALL: | |
227 | return "EXC_MACH_SYSCALL"; | |
228 | case EXC_RPC_ALERT: | |
229 | return "EXC_RPC_ALERT"; | |
230 | case EXC_CRASH: | |
231 | return "EXC_CRASH"; | |
232 | default: | |
233 | snprintf (unknown_exception_buf, 32, _("unknown (%d)"), i); | |
234 | return unknown_exception_buf; | |
235 | } | |
236 | } | |
237 | ||
a7aa0d73 JB |
238 | /* Set errno to zero, and then call ptrace with the given arguments. |
239 | If inferior debugging traces are on, then also print a debug | |
240 | trace. | |
241 | ||
242 | The returned value is the same as the value returned by ptrace, | |
243 | except in the case where that value is -1 but errno is zero. | |
244 | This case is documented to be a non-error situation, so we | |
245 | return zero in that case. */ | |
246 | ||
a80b95ba TG |
247 | static int |
248 | darwin_ptrace (const char *name, | |
249 | int request, int pid, PTRACE_TYPE_ARG3 arg3, int arg4) | |
250 | { | |
251 | int ret; | |
252 | ||
a7aa0d73 | 253 | errno = 0; |
a80b95ba | 254 | ret = ptrace (request, pid, (caddr_t) arg3, arg4); |
a7aa0d73 JB |
255 | if (ret == -1 && errno == 0) |
256 | ret = 0; | |
a80b95ba | 257 | |
bb00b29d | 258 | inferior_debug (4, _("ptrace (%s, %d, 0x%x, %d): %d (%s)\n"), |
a80b95ba | 259 | name, pid, arg3, arg4, ret, |
a3224241 | 260 | (ret != 0) ? safe_strerror (errno) : _("no error")); |
a80b95ba TG |
261 | return ret; |
262 | } | |
263 | ||
264 | static int | |
265 | cmp_thread_t (const void *l, const void *r) | |
266 | { | |
bb00b29d TG |
267 | thread_t tl = *(const thread_t *)l; |
268 | thread_t tr = *(const thread_t *)r; | |
269 | return (int)(tl - tr); | |
a80b95ba TG |
270 | } |
271 | ||
272 | static void | |
bb00b29d | 273 | darwin_check_new_threads (struct inferior *inf) |
a80b95ba TG |
274 | { |
275 | kern_return_t kret; | |
276 | unsigned int i; | |
277 | thread_array_t thread_list; | |
278 | unsigned int new_nbr; | |
279 | unsigned int old_nbr; | |
280 | unsigned int new_ix, old_ix; | |
bb00b29d TG |
281 | darwin_inferior *darwin_inf = inf->private; |
282 | VEC (darwin_thread_t) *thread_vec; | |
a80b95ba TG |
283 | |
284 | /* Get list of threads. */ | |
bb00b29d | 285 | kret = task_threads (darwin_inf->task, &thread_list, &new_nbr); |
a80b95ba TG |
286 | MACH_CHECK_ERROR (kret); |
287 | if (kret != KERN_SUCCESS) | |
288 | return; | |
289 | ||
bb00b29d | 290 | /* Sort the list. */ |
a80b95ba TG |
291 | if (new_nbr > 1) |
292 | qsort (thread_list, new_nbr, sizeof (thread_t), cmp_thread_t); | |
293 | ||
bb00b29d TG |
294 | if (darwin_inf->threads) |
295 | old_nbr = VEC_length (darwin_thread_t, darwin_inf->threads); | |
a80b95ba TG |
296 | else |
297 | old_nbr = 0; | |
298 | ||
bb00b29d TG |
299 | /* Quick check for no changes. */ |
300 | if (old_nbr == new_nbr) | |
301 | { | |
302 | for (i = 0; i < new_nbr; i++) | |
303 | if (thread_list[i] | |
304 | != VEC_index (darwin_thread_t, darwin_inf->threads, i)->gdb_port) | |
305 | break; | |
306 | if (i == new_nbr) | |
307 | { | |
308 | kret = vm_deallocate (gdb_task, (vm_address_t) thread_list, | |
309 | new_nbr * sizeof (int)); | |
310 | MACH_CHECK_ERROR (kret); | |
311 | return; | |
312 | } | |
313 | } | |
314 | ||
315 | thread_vec = VEC_alloc (darwin_thread_t, new_nbr); | |
316 | ||
a80b95ba TG |
317 | for (new_ix = 0, old_ix = 0; new_ix < new_nbr || old_ix < old_nbr;) |
318 | { | |
319 | thread_t new_id = (new_ix < new_nbr) ? | |
320 | thread_list[new_ix] : THREAD_NULL; | |
bb00b29d TG |
321 | darwin_thread_t *old = (old_ix < old_nbr) ? |
322 | VEC_index (darwin_thread_t, darwin_inf->threads, old_ix) : NULL; | |
323 | thread_t old_id = old ? old->gdb_port : THREAD_NULL; | |
324 | ||
325 | inferior_debug | |
326 | (12, _(" new_ix:%d/%d, old_ix:%d/%d, new_id:%x old_id:%x\n"), | |
327 | new_ix, new_nbr, old_ix, old_nbr, new_id, old_id); | |
a80b95ba TG |
328 | |
329 | if (old_id == new_id) | |
330 | { | |
331 | /* Thread still exist. */ | |
bb00b29d | 332 | VEC_safe_push (darwin_thread_t, thread_vec, old); |
a80b95ba TG |
333 | new_ix++; |
334 | old_ix++; | |
335 | ||
336 | kret = mach_port_deallocate (gdb_task, old_id); | |
337 | MACH_CHECK_ERROR (kret); | |
338 | continue; | |
339 | } | |
bb00b29d TG |
340 | if (new_ix < new_nbr && new_id == MACH_PORT_DEAD) |
341 | { | |
342 | /* Ignore dead ports. | |
343 | In some weird cases, we might get dead ports. They should | |
344 | correspond to dead thread so they could safely be ignored. */ | |
345 | new_ix++; | |
346 | continue; | |
347 | } | |
348 | if (new_ix < new_nbr && (old_ix == old_nbr || new_id < old_id)) | |
a80b95ba TG |
349 | { |
350 | /* A thread was created. */ | |
351 | struct thread_info *tp; | |
bb00b29d | 352 | struct private_thread_info *pti; |
a80b95ba | 353 | |
bb00b29d TG |
354 | pti = XZALLOC (struct private_thread_info); |
355 | pti->gdb_port = new_id; | |
356 | pti->msg_state = DARWIN_RUNNING; | |
357 | ||
358 | /* Add a new thread unless this is the first one ever met. */ | |
359 | if (!(old_nbr == 0 && new_ix == 0)) | |
360 | tp = add_thread_with_info (ptid_build (inf->pid, 0, new_id), pti); | |
361 | else | |
362 | { | |
363 | tp = find_thread_ptid (ptid_build (inf->pid, 0, 0)); | |
364 | gdb_assert (tp); | |
365 | tp->private = pti; | |
366 | } | |
367 | VEC_safe_push (darwin_thread_t, thread_vec, pti); | |
a80b95ba TG |
368 | new_ix++; |
369 | continue; | |
370 | } | |
bb00b29d | 371 | if (old_ix < old_nbr && (new_ix == new_nbr || new_id > old_id)) |
a80b95ba TG |
372 | { |
373 | /* A thread was removed. */ | |
374 | delete_thread (ptid_build (inf->pid, 0, old_id)); | |
375 | kret = mach_port_deallocate (gdb_task, old_id); | |
376 | MACH_CHECK_ERROR (kret); | |
377 | old_ix++; | |
bb00b29d | 378 | continue; |
a80b95ba | 379 | } |
f3574227 | 380 | gdb_assert_not_reached ("unexpected thread case"); |
a80b95ba TG |
381 | } |
382 | ||
bb00b29d TG |
383 | if (darwin_inf->threads) |
384 | VEC_free (darwin_thread_t, darwin_inf->threads); | |
385 | darwin_inf->threads = thread_vec; | |
a80b95ba TG |
386 | |
387 | kret = vm_deallocate (gdb_task, (vm_address_t) thread_list, | |
388 | new_nbr * sizeof (int)); | |
389 | MACH_CHECK_ERROR (kret); | |
390 | } | |
391 | ||
bb00b29d TG |
392 | static int |
393 | find_inferior_task_it (struct inferior *inf, void *port_ptr) | |
a80b95ba | 394 | { |
bb00b29d TG |
395 | return inf->private->task == *(task_t*)port_ptr; |
396 | } | |
a80b95ba | 397 | |
bb00b29d TG |
398 | static int |
399 | find_inferior_notify_it (struct inferior *inf, void *port_ptr) | |
400 | { | |
401 | return inf->private->notify_port == *(task_t*)port_ptr; | |
a80b95ba TG |
402 | } |
403 | ||
bb00b29d TG |
404 | /* Return an inferior by task port. */ |
405 | static struct inferior * | |
406 | darwin_find_inferior_by_task (task_t port) | |
a80b95ba | 407 | { |
bb00b29d TG |
408 | return iterate_over_inferiors (&find_inferior_task_it, &port); |
409 | } | |
a80b95ba | 410 | |
bb00b29d TG |
411 | /* Return an inferior by notification port. */ |
412 | static struct inferior * | |
413 | darwin_find_inferior_by_notify (mach_port_t port) | |
414 | { | |
415 | return iterate_over_inferiors (&find_inferior_notify_it, &port); | |
416 | } | |
a80b95ba | 417 | |
bb00b29d TG |
418 | /* Return a thread by port. */ |
419 | static darwin_thread_t * | |
420 | darwin_find_thread (struct inferior *inf, thread_t thread) | |
421 | { | |
422 | darwin_thread_t *t; | |
423 | int k; | |
424 | ||
425 | for (k = 0; | |
426 | VEC_iterate (darwin_thread_t, inf->private->threads, k, t); | |
427 | k++) | |
428 | if (t->gdb_port == thread) | |
429 | return t; | |
430 | return NULL; | |
431 | } | |
a80b95ba | 432 | |
bb00b29d | 433 | /* Suspend (ie stop) an inferior at Mach level. */ |
a80b95ba | 434 | |
bb00b29d TG |
435 | static void |
436 | darwin_suspend_inferior (struct inferior *inf) | |
437 | { | |
438 | if (!inf->private->suspended) | |
a80b95ba | 439 | { |
bb00b29d | 440 | kern_return_t kret; |
a80b95ba | 441 | |
bb00b29d TG |
442 | kret = task_suspend (inf->private->task); |
443 | MACH_CHECK_ERROR (kret); | |
a80b95ba | 444 | |
bb00b29d TG |
445 | inf->private->suspended = 1; |
446 | } | |
447 | } | |
a80b95ba | 448 | |
bb00b29d | 449 | /* Resume an inferior at Mach level. */ |
a80b95ba | 450 | |
bb00b29d TG |
451 | static void |
452 | darwin_resume_inferior (struct inferior *inf) | |
453 | { | |
454 | if (inf->private->suspended) | |
455 | { | |
456 | kern_return_t kret; | |
a80b95ba | 457 | |
bb00b29d TG |
458 | kret = task_resume (inf->private->task); |
459 | MACH_CHECK_ERROR (kret); | |
460 | ||
461 | inf->private->suspended = 0; | |
a80b95ba TG |
462 | } |
463 | } | |
464 | ||
bb00b29d TG |
465 | /* Iterator functions. */ |
466 | ||
467 | static int | |
468 | darwin_suspend_inferior_it (struct inferior *inf, void *arg) | |
a80b95ba | 469 | { |
bb00b29d TG |
470 | darwin_suspend_inferior (inf); |
471 | darwin_check_new_threads (inf); | |
472 | return 0; | |
473 | } | |
474 | ||
475 | static int | |
476 | darwin_resume_inferior_it (struct inferior *inf, void *arg) | |
477 | { | |
478 | darwin_resume_inferior (inf); | |
479 | return 0; | |
a80b95ba TG |
480 | } |
481 | ||
bb00b29d TG |
482 | static void |
483 | darwin_dump_message (mach_msg_header_t *hdr, int disp_body) | |
484 | { | |
485 | printf_unfiltered (_("message header:\n")); | |
486 | printf_unfiltered (_(" bits: 0x%x\n"), hdr->msgh_bits); | |
487 | printf_unfiltered (_(" size: 0x%x\n"), hdr->msgh_size); | |
488 | printf_unfiltered (_(" remote-port: 0x%x\n"), hdr->msgh_remote_port); | |
489 | printf_unfiltered (_(" local-port: 0x%x\n"), hdr->msgh_local_port); | |
490 | printf_unfiltered (_(" reserved: 0x%x\n"), hdr->msgh_reserved); | |
491 | printf_unfiltered (_(" id: 0x%x\n"), hdr->msgh_id); | |
492 | ||
493 | if (disp_body) | |
494 | { | |
495 | const unsigned char *data; | |
496 | const unsigned long *ldata; | |
497 | int size; | |
498 | int i; | |
499 | ||
500 | data = (unsigned char *)(hdr + 1); | |
501 | size = hdr->msgh_size - sizeof (mach_msg_header_t); | |
502 | ||
503 | if (hdr->msgh_bits & MACH_MSGH_BITS_COMPLEX) | |
504 | { | |
505 | mach_msg_body_t *bod = (mach_msg_body_t*)data; | |
506 | mach_msg_port_descriptor_t *desc = | |
507 | (mach_msg_port_descriptor_t *)(bod + 1); | |
508 | int k; | |
509 | NDR_record_t *ndr; | |
510 | printf_unfiltered (_("body: descriptor_count=%u\n"), | |
511 | bod->msgh_descriptor_count); | |
512 | data += sizeof (mach_msg_body_t); | |
513 | size -= sizeof (mach_msg_body_t); | |
514 | for (k = 0; k < bod->msgh_descriptor_count; k++) | |
515 | switch (desc[k].type) | |
516 | { | |
517 | case MACH_MSG_PORT_DESCRIPTOR: | |
518 | printf_unfiltered | |
519 | (_(" descr %d: type=%u (port) name=0x%x, dispo=%d\n"), | |
520 | k, desc[k].type, desc[k].name, desc[k].disposition); | |
521 | break; | |
522 | default: | |
523 | printf_unfiltered (_(" descr %d: type=%u\n"), | |
524 | k, desc[k].type); | |
525 | break; | |
526 | } | |
527 | data += bod->msgh_descriptor_count | |
528 | * sizeof (mach_msg_port_descriptor_t); | |
529 | size -= bod->msgh_descriptor_count | |
530 | * sizeof (mach_msg_port_descriptor_t); | |
531 | ndr = (NDR_record_t *)(desc + bod->msgh_descriptor_count); | |
532 | printf_unfiltered | |
533 | (_("NDR: mig=%02x if=%02x encod=%02x " | |
534 | "int=%02x char=%02x float=%02x\n"), | |
535 | ndr->mig_vers, ndr->if_vers, ndr->mig_encoding, | |
536 | ndr->int_rep, ndr->char_rep, ndr->float_rep); | |
537 | data += sizeof (NDR_record_t); | |
538 | size -= sizeof (NDR_record_t); | |
539 | } | |
540 | ||
541 | printf_unfiltered (_(" data:")); | |
542 | ldata = (const unsigned long *)data; | |
543 | for (i = 0; i < size / sizeof (unsigned long); i++) | |
544 | printf_unfiltered (" %08lx", ldata[i]); | |
545 | printf_unfiltered (_("\n")); | |
546 | } | |
547 | } | |
548 | ||
549 | static int | |
550 | darwin_decode_exception_message (mach_msg_header_t *hdr, | |
551 | struct inferior **pinf, | |
552 | darwin_thread_t **pthread) | |
a80b95ba | 553 | { |
bb00b29d TG |
554 | mach_msg_body_t *bod = (mach_msg_body_t*)(hdr + 1); |
555 | mach_msg_port_descriptor_t *desc = (mach_msg_port_descriptor_t *)(bod + 1); | |
556 | NDR_record_t *ndr; | |
557 | integer_t *data; | |
558 | struct inferior *inf; | |
559 | darwin_thread_t *thread; | |
560 | task_t task_port; | |
561 | thread_t thread_port; | |
a80b95ba | 562 | kern_return_t kret; |
bb00b29d | 563 | int i; |
a80b95ba | 564 | |
bb00b29d TG |
565 | /* Check message identifier. 2401 is exc. */ |
566 | if (hdr->msgh_id != 2401) | |
567 | return -1; | |
568 | ||
569 | /* Check message header. */ | |
570 | if (!(hdr->msgh_bits & MACH_MSGH_BITS_COMPLEX)) | |
571 | return -1; | |
572 | ||
573 | /* Check descriptors. */ | |
574 | if (hdr->msgh_size < (sizeof (*hdr) + sizeof (*bod) + 2 * sizeof (*desc) | |
575 | + sizeof (*ndr) + 2 * sizeof (integer_t)) | |
576 | || bod->msgh_descriptor_count != 2 | |
577 | || desc[0].type != MACH_MSG_PORT_DESCRIPTOR | |
578 | || desc[0].disposition != MACH_MSG_TYPE_MOVE_SEND | |
579 | || desc[1].type != MACH_MSG_PORT_DESCRIPTOR | |
580 | || desc[1].disposition != MACH_MSG_TYPE_MOVE_SEND) | |
581 | return -1; | |
582 | ||
583 | /* Check data representation. */ | |
584 | ndr = (NDR_record_t *)(desc + 2); | |
585 | if (ndr->mig_vers != NDR_PROTOCOL_2_0 | |
586 | || ndr->if_vers != NDR_PROTOCOL_2_0 | |
587 | || ndr->mig_encoding != NDR_record.mig_encoding | |
588 | || ndr->int_rep != NDR_record.int_rep | |
589 | || ndr->char_rep != NDR_record.char_rep | |
590 | || ndr->float_rep != NDR_record.float_rep) | |
591 | return -1; | |
592 | ||
593 | /* Ok, the hard work. */ | |
594 | data = (integer_t *)(ndr + 1); | |
595 | ||
596 | /* Find process by port. */ | |
597 | task_port = desc[1].name; | |
598 | thread_port = desc[0].name; | |
599 | inf = darwin_find_inferior_by_task (task_port); | |
600 | if (inf == NULL) | |
601 | return -1; | |
602 | *pinf = inf; | |
603 | ||
604 | /* Find thread by port. */ | |
605 | /* Check for new threads. Do it early so that the port in the exception | |
606 | message can be deallocated. */ | |
607 | darwin_check_new_threads (inf); | |
608 | ||
609 | /* We got new rights to the task and the thread. Get rid of them. */ | |
a80b95ba TG |
610 | kret = mach_port_deallocate (mach_task_self (), task_port); |
611 | MACH_CHECK_ERROR (kret); | |
612 | kret = mach_port_deallocate (mach_task_self (), thread_port); | |
613 | MACH_CHECK_ERROR (kret); | |
614 | ||
bb00b29d TG |
615 | thread = darwin_find_thread (inf, thread_port); |
616 | if (thread == NULL) | |
617 | return -1; | |
618 | *pthread = thread; | |
619 | ||
484a26a8 TG |
620 | /* The thread should be running. However we have observed cases where a thread |
621 | got a SIGTTIN message after being stopped. */ | |
622 | gdb_assert (thread->msg_state != DARWIN_MESSAGE); | |
623 | ||
bb00b29d | 624 | /* Finish decoding. */ |
bb00b29d TG |
625 | thread->event.header = *hdr; |
626 | thread->event.thread_port = thread_port; | |
627 | thread->event.task_port = task_port; | |
628 | thread->event.ex_type = data[0]; | |
629 | thread->event.data_count = data[1]; | |
630 | ||
631 | if (hdr->msgh_size < (sizeof (*hdr) + sizeof (*bod) + 2 * sizeof (*desc) | |
632 | + sizeof (*ndr) + 2 * sizeof (integer_t) | |
633 | + data[1] * sizeof (integer_t))) | |
634 | return -1; | |
635 | for (i = 0; i < data[1]; i++) | |
636 | thread->event.ex_data[i] = data[2 + i]; | |
637 | ||
638 | thread->msg_state = DARWIN_MESSAGE; | |
639 | ||
640 | return 0; | |
641 | } | |
642 | ||
643 | static void | |
644 | darwin_encode_reply (mig_reply_error_t *reply, mach_msg_header_t *hdr, | |
645 | integer_t code) | |
646 | { | |
647 | mach_msg_header_t *rh = &reply->Head; | |
648 | rh->msgh_bits = MACH_MSGH_BITS(MACH_MSGH_BITS_REMOTE(hdr->msgh_bits), 0); | |
649 | rh->msgh_remote_port = hdr->msgh_remote_port; | |
650 | rh->msgh_size = (mach_msg_size_t)sizeof(mig_reply_error_t); | |
651 | rh->msgh_local_port = MACH_PORT_NULL; | |
652 | rh->msgh_id = hdr->msgh_id + 100; | |
653 | ||
654 | reply->NDR = NDR_record; | |
655 | reply->RetCode = code; | |
a80b95ba TG |
656 | } |
657 | ||
bb00b29d TG |
658 | static void |
659 | darwin_send_reply (struct inferior *inf, darwin_thread_t *thread) | |
a80b95ba TG |
660 | { |
661 | kern_return_t kret; | |
bb00b29d | 662 | mig_reply_error_t reply; |
a80b95ba | 663 | |
bb00b29d TG |
664 | darwin_encode_reply (&reply, &thread->event.header, KERN_SUCCESS); |
665 | ||
666 | kret = mach_msg (&reply.Head, MACH_SEND_MSG | MACH_SEND_INTERRUPT, | |
667 | reply.Head.msgh_size, 0, | |
668 | MACH_PORT_NULL, MACH_MSG_TIMEOUT_NONE, | |
669 | MACH_PORT_NULL); | |
a80b95ba TG |
670 | MACH_CHECK_ERROR (kret); |
671 | ||
bb00b29d TG |
672 | inf->private->pending_messages--; |
673 | } | |
674 | ||
675 | static void | |
676 | darwin_resume_thread (struct inferior *inf, darwin_thread_t *thread, | |
677 | int step, int nsignal) | |
678 | { | |
679 | kern_return_t kret; | |
680 | int res; | |
681 | ||
a80b95ba | 682 | inferior_debug |
bb00b29d TG |
683 | (3, _("darwin_resume_thread: state=%d, thread=0x%x, step=%d nsignal=%d\n"), |
684 | thread->msg_state, thread->gdb_port, step, nsignal); | |
685 | ||
686 | switch (thread->msg_state) | |
a80b95ba | 687 | { |
bb00b29d TG |
688 | case DARWIN_MESSAGE: |
689 | if (thread->event.ex_type == EXC_SOFTWARE | |
690 | && thread->event.ex_data[0] == EXC_SOFT_SIGNAL) | |
691 | { | |
692 | /* Either deliver a new signal or cancel the signal received. */ | |
693 | res = PTRACE (PT_THUPDATE, inf->pid, | |
694 | (void *)(uintptr_t)thread->gdb_port, nsignal); | |
695 | if (res < 0) | |
696 | inferior_debug (1, _("ptrace THUP: res=%d\n"), res); | |
697 | } | |
698 | else if (nsignal) | |
699 | { | |
700 | /* Note: ptrace is allowed only if the process is stopped. | |
701 | Directly send the signal to the thread. */ | |
702 | res = syscall (SYS___pthread_kill, thread->gdb_port, nsignal); | |
703 | inferior_debug (4, _("darwin_resume_thread: kill 0x%x %d: %d\n"), | |
704 | thread->gdb_port, nsignal, res); | |
705 | thread->signaled = 1; | |
706 | } | |
707 | ||
708 | /* Set single step. */ | |
709 | inferior_debug (4, _("darwin_set_sstep (thread=%x, enable=%d)\n"), | |
710 | thread->gdb_port, step); | |
711 | darwin_set_sstep (thread->gdb_port, step); | |
712 | thread->single_step = step; | |
713 | ||
714 | darwin_send_reply (inf, thread); | |
715 | thread->msg_state = DARWIN_RUNNING; | |
716 | break; | |
717 | ||
718 | case DARWIN_RUNNING: | |
719 | break; | |
720 | ||
721 | case DARWIN_STOPPED: | |
722 | kret = thread_resume (thread->gdb_port); | |
723 | MACH_CHECK_ERROR (kret); | |
724 | ||
725 | thread->msg_state = DARWIN_RUNNING; | |
726 | break; | |
a80b95ba | 727 | } |
bb00b29d | 728 | } |
a80b95ba | 729 | |
bb00b29d | 730 | /* Resume all threads of the inferior. */ |
a80b95ba | 731 | |
bb00b29d TG |
732 | static void |
733 | darwin_resume_inferior_threads (struct inferior *inf, int step, int nsignal) | |
734 | { | |
735 | darwin_thread_t *thread; | |
736 | int k; | |
737 | ||
738 | for (k = 0; | |
739 | VEC_iterate (darwin_thread_t, inf->private->threads, k, thread); | |
740 | k++) | |
741 | darwin_resume_thread (inf, thread, step, nsignal); | |
a80b95ba TG |
742 | } |
743 | ||
bb00b29d | 744 | struct resume_inferior_threads_param |
a80b95ba | 745 | { |
bb00b29d TG |
746 | int step; |
747 | int nsignal; | |
748 | }; | |
749 | ||
750 | static int | |
751 | darwin_resume_inferior_threads_it (struct inferior *inf, void *param) | |
752 | { | |
753 | int step = ((struct resume_inferior_threads_param *)param)->step; | |
754 | int nsignal = ((struct resume_inferior_threads_param *)param)->nsignal; | |
755 | ||
756 | darwin_resume_inferior_threads (inf, step, nsignal); | |
757 | ||
758 | return 0; | |
759 | } | |
760 | ||
761 | /* Suspend all threads of INF. */ | |
762 | ||
763 | static void | |
764 | darwin_suspend_inferior_threads (struct inferior *inf) | |
765 | { | |
766 | darwin_thread_t *thread; | |
a80b95ba | 767 | kern_return_t kret; |
bb00b29d TG |
768 | int k; |
769 | ||
770 | for (k = 0; | |
771 | VEC_iterate (darwin_thread_t, inf->private->threads, k, thread); | |
772 | k++) | |
773 | switch (thread->msg_state) | |
774 | { | |
775 | case DARWIN_STOPPED: | |
776 | case DARWIN_MESSAGE: | |
777 | break; | |
778 | case DARWIN_RUNNING: | |
779 | kret = thread_suspend (thread->gdb_port); | |
780 | MACH_CHECK_ERROR (kret); | |
781 | thread->msg_state = DARWIN_STOPPED; | |
782 | break; | |
783 | } | |
784 | } | |
a80b95ba | 785 | |
bb00b29d TG |
786 | static void |
787 | darwin_resume (ptid_t ptid, int step, enum target_signal signal) | |
788 | { | |
789 | struct target_waitstatus status; | |
790 | int pid; | |
a80b95ba | 791 | |
bb00b29d TG |
792 | kern_return_t kret; |
793 | int res; | |
794 | int nsignal; | |
795 | struct inferior *inf; | |
a80b95ba | 796 | |
bb00b29d TG |
797 | inferior_debug |
798 | (2, _("darwin_resume: pid=%d, tid=0x%x, step=%d, signal=%d\n"), | |
799 | ptid_get_pid (ptid), ptid_get_tid (ptid), step, signal); | |
800 | ||
801 | if (signal == TARGET_SIGNAL_0) | |
802 | nsignal = 0; | |
803 | else | |
804 | nsignal = target_signal_to_host (signal); | |
a80b95ba | 805 | |
bb00b29d TG |
806 | /* Don't try to single step all threads. */ |
807 | if (step) | |
808 | ptid = inferior_ptid; | |
809 | ||
810 | /* minus_one_ptid is RESUME_ALL. */ | |
811 | if (ptid_equal (ptid, minus_one_ptid)) | |
a80b95ba | 812 | { |
bb00b29d TG |
813 | struct resume_inferior_threads_param param; |
814 | ||
815 | param.nsignal = nsignal; | |
816 | param.step = step; | |
a80b95ba | 817 | |
bb00b29d TG |
818 | /* Resume threads. */ |
819 | iterate_over_inferiors (darwin_resume_inferior_threads_it, ¶m); | |
820 | /* Resume tasks. */ | |
821 | iterate_over_inferiors (darwin_resume_inferior_it, NULL); | |
822 | } | |
823 | else | |
a80b95ba | 824 | { |
bb00b29d TG |
825 | struct inferior *inf = find_inferior_pid (ptid_get_pid (ptid)); |
826 | long tid = ptid_get_tid (ptid); | |
827 | ||
828 | /* Stop the inferior (should be useless). */ | |
829 | darwin_suspend_inferior (inf); | |
830 | ||
831 | if (tid == 0) | |
832 | darwin_resume_inferior_threads (inf, step, nsignal); | |
833 | else | |
834 | { | |
835 | darwin_thread_t *thread; | |
836 | ||
837 | /* Suspend threads of the task. */ | |
838 | darwin_suspend_inferior_threads (inf); | |
839 | ||
840 | /* Resume the selected thread. */ | |
841 | thread = darwin_find_thread (inf, tid); | |
842 | gdb_assert (thread); | |
843 | darwin_resume_thread (inf, thread, step, nsignal); | |
844 | } | |
845 | ||
846 | /* Resume the task. */ | |
847 | darwin_resume_inferior (inf); | |
a80b95ba | 848 | } |
bb00b29d | 849 | } |
a80b95ba | 850 | |
bb00b29d TG |
851 | static void |
852 | darwin_resume_to (struct target_ops *ops, ptid_t ptid, int step, | |
853 | enum target_signal signal) | |
854 | { | |
855 | return darwin_resume (ptid, step, signal); | |
856 | } | |
857 | ||
858 | static ptid_t | |
859 | darwin_decode_message (mach_msg_header_t *hdr, | |
860 | darwin_thread_t **pthread, | |
861 | struct inferior **pinf, | |
862 | struct target_waitstatus *status) | |
863 | { | |
864 | darwin_thread_t *thread; | |
865 | struct inferior *inf; | |
a80b95ba TG |
866 | |
867 | /* Exception message. */ | |
868 | if (hdr->msgh_local_port == darwin_ex_port) | |
869 | { | |
bb00b29d TG |
870 | int res; |
871 | ||
872 | /* Decode message. */ | |
873 | res = darwin_decode_exception_message (hdr, &inf, &thread); | |
874 | ||
875 | if (res < 0) | |
a80b95ba | 876 | { |
bb00b29d TG |
877 | /* Should not happen... */ |
878 | printf_unfiltered (_("darwin_wait: ill-formatted message (id=%x)\n"), | |
a80b95ba | 879 | hdr->msgh_id); |
bb00b29d | 880 | /* FIXME: send a failure reply? */ |
a80b95ba TG |
881 | status->kind = TARGET_WAITKIND_SPURIOUS; |
882 | return minus_one_ptid; | |
883 | } | |
bb00b29d TG |
884 | *pinf = inf; |
885 | *pthread = thread; | |
886 | inf->private->pending_messages++; | |
a80b95ba TG |
887 | |
888 | status->kind = TARGET_WAITKIND_STOPPED; | |
bb00b29d TG |
889 | thread->msg_state = DARWIN_MESSAGE; |
890 | ||
891 | inferior_debug (4, _("darwin_wait: thread=%x, got %s\n"), | |
892 | thread->gdb_port, | |
893 | unparse_exception_type (thread->event.ex_type)); | |
a80b95ba | 894 | |
bb00b29d | 895 | switch (thread->event.ex_type) |
a80b95ba TG |
896 | { |
897 | case EXC_BAD_ACCESS: | |
898 | status->value.sig = TARGET_EXC_BAD_ACCESS; | |
899 | break; | |
900 | case EXC_BAD_INSTRUCTION: | |
901 | status->value.sig = TARGET_EXC_BAD_INSTRUCTION; | |
902 | break; | |
903 | case EXC_ARITHMETIC: | |
904 | status->value.sig = TARGET_EXC_ARITHMETIC; | |
905 | break; | |
906 | case EXC_EMULATION: | |
907 | status->value.sig = TARGET_EXC_EMULATION; | |
908 | break; | |
909 | case EXC_SOFTWARE: | |
bb00b29d | 910 | if (thread->event.ex_data[0] == EXC_SOFT_SIGNAL) |
a80b95ba | 911 | { |
bb00b29d TG |
912 | status->value.sig = |
913 | target_signal_from_host (thread->event.ex_data[1]); | |
914 | inferior_debug (5, _(" (signal %d: %s)\n"), | |
915 | thread->event.ex_data[1], | |
a80b95ba | 916 | target_signal_to_name (status->value.sig)); |
bb00b29d TG |
917 | |
918 | /* If the thread is stopped because it has received a signal | |
919 | that gdb has just sent, continue. */ | |
920 | if (thread->signaled) | |
921 | { | |
922 | thread->signaled = 0; | |
923 | darwin_send_reply (inf, thread); | |
924 | thread->msg_state = DARWIN_RUNNING; | |
925 | status->kind = TARGET_WAITKIND_IGNORE; | |
926 | } | |
a80b95ba TG |
927 | } |
928 | else | |
bb00b29d | 929 | status->value.sig = TARGET_EXC_SOFTWARE; |
a80b95ba TG |
930 | break; |
931 | case EXC_BREAKPOINT: | |
932 | /* Many internal GDB routines expect breakpoints to be reported | |
933 | as TARGET_SIGNAL_TRAP, and will report TARGET_EXC_BREAKPOINT | |
0963b4bd | 934 | as a spurious signal. */ |
a80b95ba TG |
935 | status->value.sig = TARGET_SIGNAL_TRAP; |
936 | break; | |
937 | default: | |
938 | status->value.sig = TARGET_SIGNAL_UNKNOWN; | |
939 | break; | |
940 | } | |
941 | ||
bb00b29d TG |
942 | return ptid_build (inf->pid, 0, thread->gdb_port); |
943 | } | |
944 | ||
945 | *pinf = NULL; | |
946 | *pthread = NULL; | |
947 | ||
948 | inf = darwin_find_inferior_by_notify (hdr->msgh_local_port); | |
949 | if (inf != NULL) | |
950 | { | |
951 | if (!inf->private->no_ptrace) | |
952 | { | |
953 | pid_t res; | |
954 | int wstatus; | |
955 | ||
956 | res = wait4 (inf->pid, &wstatus, 0, NULL); | |
957 | if (res < 0 || res != inf->pid) | |
958 | { | |
959 | printf_unfiltered (_("wait4: res=%d: %s\n"), | |
960 | res, safe_strerror (errno)); | |
961 | status->kind = TARGET_WAITKIND_SPURIOUS; | |
962 | return minus_one_ptid; | |
963 | } | |
964 | if (WIFEXITED (wstatus)) | |
965 | { | |
966 | status->kind = TARGET_WAITKIND_EXITED; | |
967 | status->value.integer = WEXITSTATUS (wstatus); | |
968 | } | |
969 | else | |
970 | { | |
971 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
972 | status->value.sig = WTERMSIG (wstatus); | |
973 | } | |
974 | ||
975 | inferior_debug (4, _("darwin_wait: pid=%d exit, status=%x\n"), | |
976 | res, wstatus); | |
977 | ||
978 | /* Looks necessary on Leopard and harmless... */ | |
979 | wait4 (inf->pid, &wstatus, 0, NULL); | |
980 | ||
981 | return ptid_build (inf->pid, 0, 0); | |
982 | } | |
983 | else | |
984 | { | |
985 | inferior_debug (4, _("darwin_wait: pid=%d\n"), inf->pid); | |
986 | status->kind = TARGET_WAITKIND_EXITED; | |
987 | status->value.integer = 0; /* Don't know. */ | |
988 | return ptid_build (inf->pid, 0, 0); | |
989 | } | |
990 | } | |
991 | ||
992 | printf_unfiltered (_("Bad local-port: %x\n"), hdr->msgh_local_port); | |
993 | status->kind = TARGET_WAITKIND_SPURIOUS; | |
994 | return minus_one_ptid; | |
995 | } | |
996 | ||
997 | static int | |
998 | cancel_breakpoint (ptid_t ptid) | |
999 | { | |
0963b4bd | 1000 | /* Arrange for a breakpoint to be hit again later. We will handle |
bb00b29d TG |
1001 | the current event, eventually we will resume this thread, and this |
1002 | breakpoint will trap again. | |
1003 | ||
1004 | If we do not do this, then we run the risk that the user will | |
1005 | delete or disable the breakpoint, but the thread will have already | |
1006 | tripped on it. */ | |
1007 | ||
1008 | struct regcache *regcache = get_thread_regcache (ptid); | |
1009 | struct gdbarch *gdbarch = get_regcache_arch (regcache); | |
1010 | CORE_ADDR pc; | |
a80b95ba | 1011 | |
bb00b29d | 1012 | pc = regcache_read_pc (regcache) - gdbarch_decr_pc_after_break (gdbarch); |
40625c9d | 1013 | if (breakpoint_inserted_here_p (get_regcache_aspace (regcache), pc)) |
bb00b29d TG |
1014 | { |
1015 | inferior_debug (4, "cancel_breakpoint for thread %x\n", | |
1016 | ptid_get_tid (ptid)); | |
1017 | ||
1018 | /* Back up the PC if necessary. */ | |
1019 | if (gdbarch_decr_pc_after_break (gdbarch)) | |
1020 | regcache_write_pc (regcache, pc); | |
1021 | ||
1022 | return 1; | |
a80b95ba | 1023 | } |
bb00b29d TG |
1024 | return 0; |
1025 | } | |
1026 | ||
1027 | static ptid_t | |
1028 | darwin_wait (ptid_t ptid, struct target_waitstatus *status) | |
1029 | { | |
1030 | kern_return_t kret; | |
1031 | union | |
1032 | { | |
1033 | mach_msg_header_t hdr; | |
1034 | char data[0x100]; | |
1035 | } msgin; | |
1036 | mach_msg_header_t *hdr = &msgin.hdr; | |
1037 | ptid_t res; | |
1038 | darwin_thread_t *thread; | |
1039 | struct inferior *inf; | |
1040 | ||
1041 | inferior_debug | |
1042 | (2, _("darwin_wait: waiting for a message pid=%d thread=%lx\n"), | |
1043 | ptid_get_pid (ptid), ptid_get_tid (ptid)); | |
1044 | ||
1045 | /* Handle fake stop events at first. */ | |
1046 | if (darwin_inf_fake_stop != NULL) | |
1047 | { | |
1048 | inf = darwin_inf_fake_stop; | |
1049 | darwin_inf_fake_stop = NULL; | |
1050 | ||
1051 | status->kind = TARGET_WAITKIND_STOPPED; | |
1052 | status->value.sig = TARGET_SIGNAL_TRAP; | |
1053 | thread = VEC_index (darwin_thread_t, inf->private->threads, 0); | |
1054 | thread->msg_state = DARWIN_STOPPED; | |
1055 | return ptid_build (inf->pid, 0, thread->gdb_port); | |
1056 | } | |
1057 | ||
1058 | do | |
1059 | { | |
1060 | /* set_sigint_trap (); */ | |
1061 | ||
1062 | /* Wait for a message. */ | |
1063 | kret = mach_msg (&msgin.hdr, MACH_RCV_MSG | MACH_RCV_INTERRUPT, 0, | |
1064 | sizeof (msgin.data), darwin_port_set, 0, MACH_PORT_NULL); | |
1065 | ||
1066 | /* clear_sigint_trap (); */ | |
1067 | ||
1068 | if (kret == MACH_RCV_INTERRUPTED) | |
1069 | { | |
1070 | status->kind = TARGET_WAITKIND_IGNORE; | |
1071 | return minus_one_ptid; | |
1072 | } | |
1073 | ||
1074 | if (kret != MACH_MSG_SUCCESS) | |
1075 | { | |
1076 | inferior_debug (5, _("mach_msg: ret=%x\n"), kret); | |
1077 | status->kind = TARGET_WAITKIND_SPURIOUS; | |
1078 | return minus_one_ptid; | |
1079 | } | |
1080 | ||
1081 | /* Debug: display message. */ | |
1082 | if (darwin_debug_flag > 10) | |
1083 | darwin_dump_message (hdr, darwin_debug_flag > 11); | |
1084 | ||
1085 | res = darwin_decode_message (hdr, &thread, &inf, status); | |
1086 | ||
1087 | if (inf == NULL) | |
1088 | return res; | |
1089 | } | |
1090 | while (status->kind == TARGET_WAITKIND_IGNORE); | |
1091 | ||
1092 | /* Stop all tasks. */ | |
1093 | iterate_over_inferiors (darwin_suspend_inferior_it, NULL); | |
1094 | ||
1095 | /* Read pending messages. */ | |
1096 | while (1) | |
a80b95ba | 1097 | { |
bb00b29d TG |
1098 | struct target_waitstatus status2; |
1099 | ptid_t ptid2; | |
1100 | ||
1101 | kret = mach_msg (&msgin.hdr, | |
1102 | MACH_RCV_MSG | MACH_RCV_TIMEOUT, 0, | |
1103 | sizeof (msgin.data), darwin_port_set, 1, MACH_PORT_NULL); | |
1104 | ||
1105 | if (kret == MACH_RCV_TIMED_OUT) | |
1106 | break; | |
1107 | if (kret != MACH_MSG_SUCCESS) | |
1108 | { | |
1109 | inferior_debug | |
1110 | (5, _("darwin_wait: mach_msg(pending) ret=%x\n"), kret); | |
1111 | break; | |
1112 | } | |
1113 | ||
1114 | ptid2 = darwin_decode_message (hdr, &thread, &inf, &status2); | |
a80b95ba | 1115 | |
bb00b29d TG |
1116 | if (inf != NULL && thread != NULL |
1117 | && thread->event.ex_type == EXC_BREAKPOINT) | |
a80b95ba | 1118 | { |
bb00b29d TG |
1119 | if (thread->single_step |
1120 | || cancel_breakpoint (ptid_build (inf->pid, 0, thread->gdb_port))) | |
1121 | { | |
1122 | gdb_assert (thread->msg_state == DARWIN_MESSAGE); | |
1123 | darwin_send_reply (inf, thread); | |
1124 | thread->msg_state = DARWIN_RUNNING; | |
1125 | } | |
1126 | else | |
1127 | inferior_debug | |
1128 | (3, _("darwin_wait: thread %x hit a non-gdb breakpoint\n"), | |
1129 | thread->gdb_port); | |
a80b95ba | 1130 | } |
bb00b29d TG |
1131 | else |
1132 | inferior_debug (3, _("darwin_wait: unhandled pending message\n")); | |
1133 | } | |
1134 | return res; | |
1135 | } | |
a80b95ba | 1136 | |
bb00b29d TG |
1137 | static ptid_t |
1138 | darwin_wait_to (struct target_ops *ops, | |
1139 | ptid_t ptid, struct target_waitstatus *status, int options) | |
1140 | { | |
1141 | return darwin_wait (ptid, status); | |
1142 | } | |
a80b95ba | 1143 | |
bb00b29d TG |
1144 | static void |
1145 | darwin_stop (ptid_t t) | |
1146 | { | |
1147 | struct inferior *inf = current_inferior (); | |
a80b95ba | 1148 | |
bb00b29d TG |
1149 | /* FIXME: handle in no_ptrace mode. */ |
1150 | gdb_assert (!inf->private->no_ptrace); | |
1151 | kill (inf->pid, SIGINT); | |
a80b95ba TG |
1152 | } |
1153 | ||
1154 | static void | |
1155 | darwin_mourn_inferior (struct target_ops *ops) | |
1156 | { | |
1157 | struct inferior *inf = current_inferior (); | |
1158 | kern_return_t kret; | |
1159 | mach_port_t prev; | |
1160 | int i; | |
1161 | ||
1162 | unpush_target (darwin_ops); | |
1163 | ||
1164 | /* Deallocate threads. */ | |
bb00b29d | 1165 | if (inf->private->threads) |
a80b95ba TG |
1166 | { |
1167 | int k; | |
bb00b29d TG |
1168 | darwin_thread_t *t; |
1169 | for (k = 0; | |
1170 | VEC_iterate (darwin_thread_t, inf->private->threads, k, t); | |
1171 | k++) | |
a80b95ba | 1172 | { |
bb00b29d | 1173 | kret = mach_port_deallocate (gdb_task, t->gdb_port); |
a80b95ba TG |
1174 | MACH_CHECK_ERROR (kret); |
1175 | } | |
bb00b29d TG |
1176 | VEC_free (darwin_thread_t, inf->private->threads); |
1177 | inf->private->threads = NULL; | |
a80b95ba TG |
1178 | } |
1179 | ||
bb00b29d TG |
1180 | kret = mach_port_move_member (gdb_task, |
1181 | inf->private->notify_port, MACH_PORT_NULL); | |
1182 | gdb_assert (kret == KERN_SUCCESS); | |
1183 | ||
1184 | kret = mach_port_request_notification (gdb_task, inf->private->task, | |
a80b95ba | 1185 | MACH_NOTIFY_DEAD_NAME, 0, |
bb00b29d | 1186 | MACH_PORT_NULL, |
a80b95ba TG |
1187 | MACH_MSG_TYPE_MAKE_SEND_ONCE, |
1188 | &prev); | |
1189 | /* This can fail if the task is dead. */ | |
bb00b29d TG |
1190 | inferior_debug (4, "task=%x, prev=%x, notify_port=%x\n", |
1191 | inf->private->task, prev, inf->private->notify_port); | |
1192 | ||
a80b95ba TG |
1193 | if (kret == KERN_SUCCESS) |
1194 | { | |
1195 | kret = mach_port_deallocate (gdb_task, prev); | |
1196 | MACH_CHECK_ERROR (kret); | |
1197 | } | |
1198 | ||
bb00b29d TG |
1199 | kret = mach_port_destroy (gdb_task, inf->private->notify_port); |
1200 | MACH_CHECK_ERROR (kret); | |
1201 | ||
1202 | ||
a80b95ba | 1203 | /* Deallocate saved exception ports. */ |
bb00b29d | 1204 | for (i = 0; i < inf->private->exception_info.count; i++) |
a80b95ba TG |
1205 | { |
1206 | kret = mach_port_deallocate | |
bb00b29d | 1207 | (gdb_task, inf->private->exception_info.ports[i]); |
a80b95ba TG |
1208 | MACH_CHECK_ERROR (kret); |
1209 | } | |
bb00b29d | 1210 | inf->private->exception_info.count = 0; |
a80b95ba | 1211 | |
bb00b29d | 1212 | kret = mach_port_deallocate (gdb_task, inf->private->task); |
a80b95ba TG |
1213 | MACH_CHECK_ERROR (kret); |
1214 | ||
bb00b29d TG |
1215 | xfree (inf->private); |
1216 | inf->private = NULL; | |
a80b95ba TG |
1217 | |
1218 | generic_mourn_inferior (); | |
1219 | } | |
1220 | ||
1221 | static void | |
bb00b29d | 1222 | darwin_reply_to_all_pending_messages (struct inferior *inf) |
a80b95ba | 1223 | { |
bb00b29d TG |
1224 | int k; |
1225 | darwin_thread_t *t; | |
a80b95ba | 1226 | |
bb00b29d TG |
1227 | for (k = 0; |
1228 | VEC_iterate (darwin_thread_t, inf->private->threads, k, t); | |
1229 | k++) | |
1230 | { | |
1231 | if (t->msg_state == DARWIN_MESSAGE) | |
1232 | darwin_resume_thread (inf, t, 0, 0); | |
1233 | } | |
a80b95ba TG |
1234 | } |
1235 | ||
1236 | static void | |
bb00b29d | 1237 | darwin_stop_inferior (struct inferior *inf) |
a80b95ba TG |
1238 | { |
1239 | struct target_waitstatus wstatus; | |
1240 | ptid_t ptid; | |
1241 | kern_return_t kret; | |
1242 | int status; | |
1243 | int res; | |
1244 | ||
bb00b29d | 1245 | gdb_assert (inf != NULL); |
a80b95ba | 1246 | |
bb00b29d | 1247 | darwin_suspend_inferior (inf); |
a80b95ba | 1248 | |
bb00b29d | 1249 | darwin_reply_to_all_pending_messages (inf); |
a80b95ba | 1250 | |
bb00b29d TG |
1251 | if (inf->private->no_ptrace) |
1252 | return; | |
a80b95ba | 1253 | |
bb00b29d TG |
1254 | res = kill (inf->pid, SIGSTOP); |
1255 | if (res != 0) | |
b37520b6 | 1256 | warning (_("cannot kill: %s"), safe_strerror (errno)); |
a80b95ba | 1257 | |
bb00b29d TG |
1258 | /* Wait until the process is really stopped. */ |
1259 | while (1) | |
a80b95ba | 1260 | { |
bb00b29d TG |
1261 | ptid = darwin_wait (inferior_ptid, &wstatus); |
1262 | if (wstatus.kind == TARGET_WAITKIND_STOPPED | |
1263 | && wstatus.value.sig == TARGET_SIGNAL_STOP) | |
1264 | break; | |
a80b95ba TG |
1265 | } |
1266 | } | |
1267 | ||
1268 | static kern_return_t | |
1269 | darwin_save_exception_ports (darwin_inferior *inf) | |
1270 | { | |
1271 | kern_return_t kret; | |
1272 | ||
1273 | inf->exception_info.count = | |
1274 | sizeof (inf->exception_info.ports) / sizeof (inf->exception_info.ports[0]); | |
1275 | ||
1276 | kret = task_get_exception_ports | |
1277 | (inf->task, EXC_MASK_ALL, inf->exception_info.masks, | |
1278 | &inf->exception_info.count, inf->exception_info.ports, | |
1279 | inf->exception_info.behaviors, inf->exception_info.flavors); | |
1280 | return kret; | |
1281 | } | |
1282 | ||
1283 | static kern_return_t | |
1284 | darwin_restore_exception_ports (darwin_inferior *inf) | |
1285 | { | |
1286 | int i; | |
1287 | kern_return_t kret; | |
1288 | ||
1289 | for (i = 0; i < inf->exception_info.count; i++) | |
1290 | { | |
1291 | kret = task_set_exception_ports | |
1292 | (inf->task, inf->exception_info.masks[i], inf->exception_info.ports[i], | |
1293 | inf->exception_info.behaviors[i], inf->exception_info.flavors[i]); | |
1294 | if (kret != KERN_SUCCESS) | |
1295 | return kret; | |
1296 | } | |
1297 | ||
1298 | return KERN_SUCCESS; | |
1299 | } | |
1300 | ||
1301 | static void | |
bb00b29d TG |
1302 | darwin_kill_inferior (struct target_ops *ops) |
1303 | { | |
1304 | struct inferior *inf = current_inferior (); | |
1305 | struct target_waitstatus wstatus; | |
1306 | ptid_t ptid; | |
1307 | kern_return_t kret; | |
1308 | int status; | |
1309 | int res; | |
1310 | ||
1311 | if (ptid_equal (inferior_ptid, null_ptid)) | |
1312 | return; | |
1313 | ||
1314 | gdb_assert (inf != NULL); | |
1315 | ||
ee41036f TG |
1316 | kret = darwin_restore_exception_ports (inf->private); |
1317 | MACH_CHECK_ERROR (kret); | |
bb00b29d | 1318 | |
ee41036f | 1319 | darwin_reply_to_all_pending_messages (inf); |
bb00b29d | 1320 | |
ee41036f | 1321 | res = kill (inf->pid, 9); |
bb00b29d | 1322 | |
ee41036f | 1323 | if (res == 0) |
bb00b29d | 1324 | { |
bb00b29d | 1325 | darwin_resume_inferior (inf); |
ee41036f | 1326 | |
bb00b29d TG |
1327 | ptid = darwin_wait (inferior_ptid, &wstatus); |
1328 | } | |
ee41036f TG |
1329 | else if (errno != ESRCH) |
1330 | warning (_("Failed to kill inferior: kill (%d, 9) returned [%s]"), | |
1331 | inf->pid, safe_strerror (errno)); | |
bb00b29d TG |
1332 | |
1333 | target_mourn_inferior (); | |
1334 | } | |
1335 | ||
1336 | static void | |
1337 | darwin_attach_pid (struct inferior *inf) | |
a80b95ba | 1338 | { |
a80b95ba TG |
1339 | kern_return_t kret; |
1340 | mach_port_t prev_port; | |
1341 | int traps_expected; | |
bb00b29d | 1342 | mach_port_t prev_not; |
a80b95ba TG |
1343 | exception_mask_t mask; |
1344 | ||
bb00b29d TG |
1345 | inf->private = XZALLOC (darwin_inferior); |
1346 | ||
1347 | kret = task_for_pid (gdb_task, inf->pid, &inf->private->task); | |
a80b95ba TG |
1348 | if (kret != KERN_SUCCESS) |
1349 | { | |
1350 | int status; | |
a80b95ba TG |
1351 | |
1352 | if (!inf->attach_flag) | |
1353 | { | |
bb00b29d TG |
1354 | kill (inf->pid, 9); |
1355 | waitpid (inf->pid, &status, 0); | |
a80b95ba TG |
1356 | } |
1357 | ||
1358 | error (_("Unable to find Mach task port for process-id %d: %s (0x%lx).\n" | |
15c19d39 | 1359 | " (please check gdb is codesigned - see taskgated(8))"), |
bb00b29d | 1360 | inf->pid, mach_error_string (kret), (unsigned long) kret); |
a80b95ba TG |
1361 | } |
1362 | ||
bb00b29d TG |
1363 | inferior_debug (2, _("inferior task: 0x%x, pid: %d\n"), |
1364 | inf->private->task, inf->pid); | |
a80b95ba TG |
1365 | |
1366 | if (darwin_ex_port == MACH_PORT_NULL) | |
1367 | { | |
1368 | /* Create a port to get exceptions. */ | |
1369 | kret = mach_port_allocate (gdb_task, MACH_PORT_RIGHT_RECEIVE, | |
1370 | &darwin_ex_port); | |
1371 | gdb_assert (kret == KERN_SUCCESS); | |
1372 | ||
1373 | kret = mach_port_insert_right (gdb_task, darwin_ex_port, darwin_ex_port, | |
1374 | MACH_MSG_TYPE_MAKE_SEND); | |
1375 | gdb_assert (kret == KERN_SUCCESS); | |
1376 | ||
1377 | /* Create a port set and put ex_port in it. */ | |
1378 | kret = mach_port_allocate (gdb_task, MACH_PORT_RIGHT_PORT_SET, | |
1379 | &darwin_port_set); | |
1380 | gdb_assert (kret == KERN_SUCCESS); | |
1381 | ||
1382 | kret = mach_port_move_member (gdb_task, darwin_ex_port, darwin_port_set); | |
1383 | gdb_assert (kret == KERN_SUCCESS); | |
bb00b29d | 1384 | } |
a80b95ba | 1385 | |
bb00b29d TG |
1386 | /* Create a port to be notified when the child task terminates. */ |
1387 | kret = mach_port_allocate (gdb_task, MACH_PORT_RIGHT_RECEIVE, | |
1388 | &inf->private->notify_port); | |
1389 | gdb_assert (kret == KERN_SUCCESS); | |
a80b95ba | 1390 | |
bb00b29d TG |
1391 | kret = mach_port_move_member (gdb_task, |
1392 | inf->private->notify_port, darwin_port_set); | |
1393 | gdb_assert (kret == KERN_SUCCESS); | |
a80b95ba | 1394 | |
bb00b29d | 1395 | kret = mach_port_request_notification (gdb_task, inf->private->task, |
a80b95ba | 1396 | MACH_NOTIFY_DEAD_NAME, 0, |
bb00b29d | 1397 | inf->private->notify_port, |
a80b95ba | 1398 | MACH_MSG_TYPE_MAKE_SEND_ONCE, |
bb00b29d | 1399 | &prev_not); |
a80b95ba | 1400 | gdb_assert (kret == KERN_SUCCESS); |
bb00b29d | 1401 | gdb_assert (prev_not == MACH_PORT_NULL); |
a80b95ba | 1402 | |
bb00b29d | 1403 | kret = darwin_save_exception_ports (inf->private); |
a80b95ba TG |
1404 | gdb_assert (kret == KERN_SUCCESS); |
1405 | ||
1406 | /* Set exception port. */ | |
1407 | if (enable_mach_exceptions) | |
1408 | mask = EXC_MASK_ALL; | |
1409 | else | |
bb00b29d TG |
1410 | mask = EXC_MASK_SOFTWARE | EXC_MASK_BREAKPOINT; |
1411 | kret = task_set_exception_ports (inf->private->task, mask, darwin_ex_port, | |
1412 | EXCEPTION_DEFAULT, THREAD_STATE_NONE); | |
a80b95ba TG |
1413 | gdb_assert (kret == KERN_SUCCESS); |
1414 | ||
1415 | push_target (darwin_ops); | |
1416 | } | |
1417 | ||
1418 | static void | |
bb00b29d | 1419 | darwin_init_thread_list (struct inferior *inf) |
a80b95ba | 1420 | { |
bb00b29d TG |
1421 | darwin_thread_t *thread; |
1422 | ptid_t new_ptid; | |
a80b95ba TG |
1423 | |
1424 | darwin_check_new_threads (inf); | |
1425 | ||
bb00b29d TG |
1426 | gdb_assert (inf->private->threads |
1427 | && VEC_length (darwin_thread_t, inf->private->threads) > 0); | |
1428 | thread = VEC_index (darwin_thread_t, inf->private->threads, 0); | |
1429 | ||
1430 | /* Note: fork_inferior automatically add a thead but it uses a wrong ptid. | |
1431 | Fix up. */ | |
1432 | new_ptid = ptid_build (inf->pid, 0, thread->gdb_port); | |
1433 | thread_change_ptid (inferior_ptid, new_ptid); | |
1434 | inferior_ptid = new_ptid; | |
1435 | } | |
1436 | ||
1437 | /* The child must synchronize with gdb: gdb must set the exception port | |
1438 | before the child call PTRACE_SIGEXC. We use a pipe to achieve this. | |
1439 | FIXME: is there a lighter way ? */ | |
1440 | static int ptrace_fds[2]; | |
1441 | ||
1442 | static void | |
1443 | darwin_ptrace_me (void) | |
1444 | { | |
1445 | int res; | |
1446 | char c; | |
1447 | ||
1448 | /* Close write end point. */ | |
1449 | close (ptrace_fds[1]); | |
1450 | ||
1451 | /* Wait until gdb is ready. */ | |
1452 | res = read (ptrace_fds[0], &c, 1); | |
1453 | gdb_assert (res == 0); | |
1454 | close (ptrace_fds[0]); | |
1455 | ||
1456 | /* Get rid of privileges. */ | |
1457 | setegid (getgid ()); | |
1458 | ||
1459 | /* Set TRACEME. */ | |
1460 | PTRACE (PT_TRACE_ME, 0, 0, 0); | |
1461 | ||
1462 | /* Redirect signals to exception port. */ | |
1463 | PTRACE (PT_SIGEXC, 0, 0, 0); | |
1464 | } | |
1465 | ||
1466 | /* Dummy function to be sure fork_inferior uses fork(2) and not vfork(2). */ | |
1467 | static void | |
1468 | darwin_pre_ptrace (void) | |
1469 | { | |
1470 | if (pipe (ptrace_fds) != 0) | |
1471 | { | |
1472 | ptrace_fds[0] = -1; | |
1473 | ptrace_fds[1] = -1; | |
1474 | error (_("unable to create a pipe: %s"), safe_strerror (errno)); | |
1475 | } | |
a80b95ba TG |
1476 | } |
1477 | ||
1478 | static void | |
1479 | darwin_ptrace_him (int pid) | |
1480 | { | |
1481 | task_t itask; | |
1482 | kern_return_t kret; | |
1483 | mach_port_t prev_port; | |
1484 | int traps_expected; | |
bb00b29d | 1485 | struct inferior *inf = current_inferior (); |
a80b95ba | 1486 | |
bb00b29d | 1487 | darwin_attach_pid (inf); |
a80b95ba TG |
1488 | |
1489 | /* Let's the child run. */ | |
1490 | close (ptrace_fds[0]); | |
1491 | close (ptrace_fds[1]); | |
1492 | ||
bb00b29d TG |
1493 | darwin_init_thread_list (inf); |
1494 | ||
a80b95ba TG |
1495 | startup_inferior (START_INFERIOR_TRAPS_EXPECTED); |
1496 | } | |
1497 | ||
e69860f1 TG |
1498 | static void |
1499 | darwin_execvp (const char *file, char * const argv[], char * const env[]) | |
1500 | { | |
1501 | posix_spawnattr_t attr; | |
1502 | short ps_flags = 0; | |
f00c55f8 | 1503 | int res; |
e69860f1 | 1504 | |
f00c55f8 TG |
1505 | res = posix_spawnattr_init (&attr); |
1506 | if (res != 0) | |
e69860f1 TG |
1507 | { |
1508 | fprintf_unfiltered | |
1509 | (gdb_stderr, "Cannot initialize attribute for posix_spawn\n"); | |
1510 | return; | |
1511 | } | |
1512 | ||
1513 | /* Do like execve: replace the image. */ | |
1514 | ps_flags = POSIX_SPAWN_SETEXEC; | |
1515 | ||
1516 | /* Disable ASLR. The constant doesn't look to be available outside the | |
1517 | kernel include files. */ | |
1518 | #ifndef _POSIX_SPAWN_DISABLE_ASLR | |
1519 | #define _POSIX_SPAWN_DISABLE_ASLR 0x0100 | |
1520 | #endif | |
1521 | ps_flags |= _POSIX_SPAWN_DISABLE_ASLR; | |
f00c55f8 TG |
1522 | res = posix_spawnattr_setflags (&attr, ps_flags); |
1523 | if (res != 0) | |
e69860f1 | 1524 | { |
f00c55f8 | 1525 | fprintf_unfiltered (gdb_stderr, "Cannot set posix_spawn flags\n"); |
e69860f1 TG |
1526 | return; |
1527 | } | |
1528 | ||
ece0061f TG |
1529 | /* Specify the same binary preference to spawn the shell as the |
1530 | exec binary. This avoids spawning a 64bit shell while debugging | |
1531 | a 32bit program, which may confuse gdb. | |
1532 | Also, this slightly breaks internal layers as we suppose the binary | |
1533 | is Mach-O. Doesn't harm in practice. */ | |
1534 | if (exec_bfd != NULL) | |
1535 | { | |
1536 | cpu_type_t pref; | |
1537 | size_t ocount; | |
1538 | ||
1539 | pref = bfd_mach_o_get_data (exec_bfd)->header.cputype; | |
1540 | res = posix_spawnattr_setbinpref_np (&attr, 1, &pref, &ocount); | |
1541 | if (res != 0 || ocount != 1) | |
1542 | fprintf_unfiltered (gdb_stderr, "Cannot set posix_spawn binpref\n"); | |
1543 | } | |
1544 | ||
e69860f1 TG |
1545 | posix_spawnp (NULL, argv[0], NULL, &attr, argv, env); |
1546 | } | |
1547 | ||
a80b95ba TG |
1548 | static void |
1549 | darwin_create_inferior (struct target_ops *ops, char *exec_file, | |
1550 | char *allargs, char **env, int from_tty) | |
1551 | { | |
1552 | /* Do the hard work. */ | |
1553 | fork_inferior (exec_file, allargs, env, darwin_ptrace_me, darwin_ptrace_him, | |
e69860f1 | 1554 | darwin_pre_ptrace, NULL, darwin_execvp); |
bb00b29d | 1555 | |
a80b95ba TG |
1556 | /* Return now in case of error. */ |
1557 | if (ptid_equal (inferior_ptid, null_ptid)) | |
1558 | return; | |
1559 | } | |
1560 | \f | |
1561 | ||
1562 | /* Attach to process PID, then initialize for debugging it | |
1563 | and wait for the trace-trap that results from attaching. */ | |
1564 | static void | |
1565 | darwin_attach (struct target_ops *ops, char *args, int from_tty) | |
1566 | { | |
1567 | pid_t pid; | |
1568 | pid_t pid2; | |
1569 | int wstatus; | |
1570 | int res; | |
1571 | struct inferior *inf; | |
bb00b29d | 1572 | kern_return_t kret; |
a80b95ba | 1573 | |
74164c56 | 1574 | pid = parse_pid_to_attach (args); |
a80b95ba | 1575 | |
74164c56 | 1576 | if (pid == getpid ()) /* Trying to masturbate? */ |
a80b95ba TG |
1577 | error (_("I refuse to debug myself!")); |
1578 | ||
1579 | if (from_tty) | |
bb00b29d TG |
1580 | { |
1581 | char *exec_file = get_exec_file (0); | |
a80b95ba | 1582 | |
bb00b29d TG |
1583 | if (exec_file) |
1584 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
1585 | target_pid_to_str (pid_to_ptid (pid))); | |
1586 | else | |
1587 | printf_unfiltered (_("Attaching to %s\n"), | |
1588 | target_pid_to_str (pid_to_ptid (pid))); | |
1589 | ||
1590 | gdb_flush (gdb_stdout); | |
1591 | } | |
1592 | ||
1593 | if (pid == 0 || kill (pid, 0) < 0) | |
1594 | error (_("Can't attach to process %d: %s (%d)"), | |
1595 | pid, safe_strerror (errno), errno); | |
a80b95ba | 1596 | |
bb00b29d | 1597 | inferior_ptid = pid_to_ptid (pid); |
6c95b8df PA |
1598 | inf = current_inferior (); |
1599 | inferior_appeared (inf, pid); | |
a80b95ba | 1600 | inf->attach_flag = 1; |
6c95b8df | 1601 | |
bb00b29d TG |
1602 | /* Always add a main thread. */ |
1603 | add_thread_silent (inferior_ptid); | |
a80b95ba | 1604 | |
bb00b29d | 1605 | darwin_attach_pid (inf); |
a80b95ba | 1606 | |
bb00b29d | 1607 | darwin_suspend_inferior (inf); |
a80b95ba | 1608 | |
bb00b29d | 1609 | darwin_init_thread_list (inf); |
a80b95ba | 1610 | |
bb00b29d | 1611 | darwin_check_osabi (inf->private, ptid_get_tid (inferior_ptid)); |
a80b95ba | 1612 | |
bb00b29d TG |
1613 | gdb_assert (darwin_inf_fake_stop == NULL); |
1614 | darwin_inf_fake_stop = inf; | |
1615 | inf->private->no_ptrace = 1; | |
a80b95ba TG |
1616 | } |
1617 | ||
1618 | /* Take a program previously attached to and detaches it. | |
1619 | The program resumes execution and will no longer stop | |
1620 | on signals, etc. We'd better not have left any breakpoints | |
1621 | in the program or it'll die when it hits one. For this | |
1622 | to work, it may be necessary for the process to have been | |
1623 | previously attached. It *might* work if the program was | |
1624 | started via fork. */ | |
1625 | static void | |
1626 | darwin_detach (struct target_ops *ops, char *args, int from_tty) | |
1627 | { | |
bb00b29d TG |
1628 | pid_t pid = ptid_get_pid (inferior_ptid); |
1629 | struct inferior *inf = current_inferior (); | |
a80b95ba TG |
1630 | kern_return_t kret; |
1631 | int res; | |
1632 | ||
bb00b29d | 1633 | /* Display message. */ |
a80b95ba TG |
1634 | if (from_tty) |
1635 | { | |
1636 | char *exec_file = get_exec_file (0); | |
1637 | if (exec_file == 0) | |
1638 | exec_file = ""; | |
bb00b29d TG |
1639 | printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file, |
1640 | target_pid_to_str (pid_to_ptid (pid))); | |
a80b95ba TG |
1641 | gdb_flush (gdb_stdout); |
1642 | } | |
1643 | ||
bb00b29d TG |
1644 | /* If ptrace() is in use, stop the process. */ |
1645 | if (!inf->private->no_ptrace) | |
1646 | darwin_stop_inferior (inf); | |
a80b95ba | 1647 | |
bb00b29d | 1648 | kret = darwin_restore_exception_ports (inf->private); |
a80b95ba TG |
1649 | MACH_CHECK_ERROR (kret); |
1650 | ||
bb00b29d | 1651 | if (!inf->private->no_ptrace) |
a80b95ba | 1652 | { |
bb00b29d TG |
1653 | res = PTRACE (PT_DETACH, inf->pid, 0, 0); |
1654 | if (res != 0) | |
1655 | printf_unfiltered (_("Unable to detach from process-id %d: %s (%d)"), | |
1656 | inf->pid, safe_strerror (errno), errno); | |
a80b95ba TG |
1657 | } |
1658 | ||
bb00b29d | 1659 | darwin_reply_to_all_pending_messages (inf); |
a80b95ba | 1660 | |
5e9bc145 JB |
1661 | /* When using ptrace, we have just performed a PT_DETACH, which |
1662 | resumes the inferior. On the other hand, when we are not using | |
1663 | ptrace, we need to resume its execution ourselves. */ | |
1664 | if (inf->private->no_ptrace) | |
1665 | darwin_resume_inferior (inf); | |
a80b95ba TG |
1666 | |
1667 | darwin_mourn_inferior (ops); | |
1668 | } | |
1669 | ||
1670 | static void | |
1671 | darwin_files_info (struct target_ops *ops) | |
1672 | { | |
a80b95ba TG |
1673 | } |
1674 | ||
1675 | static char * | |
117de6a9 | 1676 | darwin_pid_to_str (struct target_ops *ops, ptid_t ptid) |
a80b95ba | 1677 | { |
bb00b29d TG |
1678 | static char buf[80]; |
1679 | long tid = ptid_get_tid (ptid); | |
1680 | ||
1681 | if (tid != 0) | |
1682 | { | |
1683 | snprintf (buf, sizeof (buf), _("Thread 0x%lx of process %u"), | |
1684 | tid, ptid_get_pid (ptid)); | |
1685 | return buf; | |
1686 | } | |
a80b95ba | 1687 | |
bb00b29d | 1688 | return normal_pid_to_str (ptid); |
a80b95ba TG |
1689 | } |
1690 | ||
1691 | static int | |
28439f5e | 1692 | darwin_thread_alive (struct target_ops *ops, ptid_t ptid) |
a80b95ba TG |
1693 | { |
1694 | return 1; | |
1695 | } | |
1696 | ||
1697 | /* If RDADDR is not NULL, read inferior task's LEN bytes from ADDR and | |
1698 | copy it to RDADDR in gdb's address space. | |
1699 | If WRADDR is not NULL, write gdb's LEN bytes from WRADDR and copy it | |
1700 | to ADDR in inferior task's address space. | |
f00c55f8 | 1701 | Return 0 on failure; number of bytes read / writen otherwise. */ |
a80b95ba TG |
1702 | static int |
1703 | darwin_read_write_inferior (task_t task, CORE_ADDR addr, | |
1704 | char *rdaddr, const char *wraddr, int length) | |
1705 | { | |
bb00b29d | 1706 | kern_return_t kret; |
a80b95ba TG |
1707 | mach_vm_address_t offset = addr & (mach_page_size - 1); |
1708 | mach_vm_address_t low_address = (mach_vm_address_t) (addr - offset); | |
1709 | mach_vm_size_t aligned_length = (mach_vm_size_t) PAGE_ROUND (offset + length); | |
1710 | pointer_t copied; | |
1711 | int copy_count; | |
1712 | mach_vm_size_t remaining_length; | |
1713 | mach_vm_address_t region_address; | |
1714 | mach_vm_size_t region_length; | |
1715 | ||
bb00b29d TG |
1716 | inferior_debug (8, _("darwin_read_write_inferior(task=%x, %s, len=%d)\n"), |
1717 | task, core_addr_to_string (addr), length); | |
1718 | ||
0963b4bd | 1719 | /* Get memory from inferior with page aligned addresses. */ |
bb00b29d | 1720 | kret = mach_vm_read (task, low_address, aligned_length, |
a80b95ba | 1721 | &copied, ©_count); |
bb00b29d | 1722 | if (kret != KERN_SUCCESS) |
a80b95ba | 1723 | { |
bb00b29d TG |
1724 | inferior_debug |
1725 | (1, _("darwin_read_write_inferior: mach_vm_read failed at %s: %s"), | |
1726 | core_addr_to_string (addr), mach_error_string (kret)); | |
a80b95ba TG |
1727 | return 0; |
1728 | } | |
1729 | ||
1730 | if (rdaddr != NULL) | |
1731 | memcpy (rdaddr, (char *)copied + offset, length); | |
1732 | ||
1733 | if (wraddr == NULL) | |
1734 | goto out; | |
1735 | ||
1736 | memcpy ((char *)copied + offset, wraddr, length); | |
1737 | ||
1738 | /* Do writes atomically. | |
1739 | First check for holes and unwritable memory. */ | |
1740 | for (region_address = low_address, remaining_length = aligned_length; | |
1741 | region_address < low_address + aligned_length; | |
1742 | region_address += region_length, remaining_length -= region_length) | |
1743 | { | |
bb00b29d TG |
1744 | vm_region_submap_short_info_data_64_t info; |
1745 | mach_vm_address_t region_start = region_address; | |
a80b95ba | 1746 | mach_msg_type_number_t count; |
bb00b29d TG |
1747 | natural_t region_depth; |
1748 | ||
1749 | region_depth = 100000; | |
1750 | count = VM_REGION_SUBMAP_SHORT_INFO_COUNT_64; | |
1751 | kret = mach_vm_region_recurse | |
1752 | (task, ®ion_start, ®ion_length, ®ion_depth, | |
1753 | (vm_region_recurse_info_t) &info, &count); | |
1754 | ||
1755 | if (kret != KERN_SUCCESS) | |
a80b95ba | 1756 | { |
bb00b29d TG |
1757 | inferior_debug (1, _("darwin_read_write_inferior: " |
1758 | "mach_vm_region_recurse failed at %s: %s\n"), | |
1759 | core_addr_to_string (region_address), | |
1760 | mach_error_string (kret)); | |
a80b95ba TG |
1761 | goto out; |
1762 | } | |
1763 | ||
bb00b29d TG |
1764 | inferior_debug |
1765 | (9, _("darwin_read_write_inferior: " | |
1766 | "mach_vm_region_recurse addr=%s, start=%s, len=%s\n"), | |
1767 | core_addr_to_string (region_address), | |
1768 | core_addr_to_string (region_start), | |
1769 | core_addr_to_string (region_length)); | |
1770 | ||
0963b4bd | 1771 | /* Check for holes in memory. */ |
bb00b29d | 1772 | if (region_start > region_address) |
a80b95ba | 1773 | { |
0963b4bd | 1774 | warning (_("No memory at %s (vs %s+0x%x). Nothing written"), |
a80b95ba | 1775 | core_addr_to_string (region_address), |
bb00b29d | 1776 | core_addr_to_string (region_start), |
a80b95ba TG |
1777 | (unsigned)region_length); |
1778 | length = 0; | |
1779 | goto out; | |
1780 | } | |
1781 | ||
bb00b29d TG |
1782 | /* Adjust the length. */ |
1783 | region_length -= (region_address - region_start); | |
1784 | ||
a80b95ba TG |
1785 | if (!(info.max_protection & VM_PROT_WRITE)) |
1786 | { | |
bb00b29d TG |
1787 | kret = mach_vm_protect |
1788 | (task, region_address, region_length, | |
1789 | TRUE, info.max_protection | VM_PROT_WRITE | VM_PROT_COPY); | |
1790 | if (kret != KERN_SUCCESS) | |
1791 | { | |
1792 | warning (_("darwin_read_write_inf: " | |
1793 | "mach_vm_protect max failed at %s: %s"), | |
1794 | core_addr_to_string (region_address), | |
1795 | mach_error_string (kret)); | |
1796 | length = 0; | |
1797 | goto out; | |
1798 | } | |
a80b95ba TG |
1799 | } |
1800 | ||
1801 | if (!(info.protection & VM_PROT_WRITE)) | |
1802 | { | |
bb00b29d | 1803 | kret = mach_vm_protect (task, region_address, region_length, |
a80b95ba | 1804 | FALSE, info.protection | VM_PROT_WRITE); |
bb00b29d | 1805 | if (kret != KERN_SUCCESS) |
a80b95ba | 1806 | { |
bb00b29d TG |
1807 | warning (_("darwin_read_write_inf: " |
1808 | "mach_vm_protect failed at %s (len=0x%lx): %s"), | |
1809 | core_addr_to_string (region_address), | |
1810 | (unsigned long)region_length, mach_error_string (kret)); | |
a80b95ba TG |
1811 | length = 0; |
1812 | goto out; | |
1813 | } | |
1814 | } | |
1815 | } | |
1816 | ||
bb00b29d | 1817 | kret = mach_vm_write (task, low_address, copied, aligned_length); |
a80b95ba | 1818 | |
bb00b29d | 1819 | if (kret != KERN_SUCCESS) |
a80b95ba TG |
1820 | { |
1821 | warning (_("darwin_read_write_inferior: mach_vm_write failed: %s"), | |
bb00b29d | 1822 | mach_error_string (kret)); |
a80b95ba TG |
1823 | length = 0; |
1824 | } | |
1825 | out: | |
1826 | mach_vm_deallocate (mach_task_self (), copied, copy_count); | |
1827 | return length; | |
1828 | } | |
1829 | ||
f00c55f8 TG |
1830 | /* Read LENGTH bytes at offset ADDR of task_dyld_info for TASK, and copy them |
1831 | to RDADDR. | |
1832 | Return 0 on failure; number of bytes read / writen otherwise. */ | |
1833 | ||
1834 | static int | |
1835 | darwin_read_dyld_info (task_t task, CORE_ADDR addr, char *rdaddr, int length) | |
1836 | { | |
1837 | struct task_dyld_info task_dyld_info; | |
1838 | mach_msg_type_number_t count = TASK_DYLD_INFO_COUNT; | |
1839 | int sz = TASK_DYLD_INFO_COUNT * sizeof (natural_t); | |
1840 | kern_return_t kret; | |
1841 | ||
1842 | if (addr >= sz) | |
1843 | return 0; | |
1844 | ||
1845 | kret = task_info (task, TASK_DYLD_INFO, (task_info_t) &task_dyld_info, &count); | |
1846 | MACH_CHECK_ERROR (kret); | |
1847 | if (kret != KERN_SUCCESS) | |
1848 | return -1; | |
1849 | /* Truncate. */ | |
1850 | if (addr + length > sz) | |
1851 | length = sz - addr; | |
1852 | memcpy (rdaddr, (char *)&task_dyld_info + addr, length); | |
1853 | return length; | |
1854 | } | |
1855 | ||
a80b95ba TG |
1856 | \f |
1857 | /* Return 0 on failure, number of bytes handled otherwise. TARGET | |
0963b4bd | 1858 | is ignored. */ |
a80b95ba TG |
1859 | static int |
1860 | darwin_xfer_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len, int write, | |
1861 | struct mem_attrib *attrib, struct target_ops *target) | |
1862 | { | |
bb00b29d TG |
1863 | struct inferior *inf = current_inferior (); |
1864 | task_t task = inf->private->task; | |
a80b95ba TG |
1865 | |
1866 | if (task == MACH_PORT_NULL) | |
1867 | return 0; | |
1868 | ||
1869 | inferior_debug (8, _("darwin_xfer_memory(%s, %d, %c)\n"), | |
1870 | core_addr_to_string (memaddr), len, write ? 'w' : 'r'); | |
1871 | ||
1872 | if (write) | |
1873 | return darwin_read_write_inferior (task, memaddr, NULL, myaddr, len); | |
1874 | else | |
1875 | return darwin_read_write_inferior (task, memaddr, myaddr, NULL, len); | |
1876 | } | |
1877 | ||
1878 | static LONGEST | |
1879 | darwin_xfer_partial (struct target_ops *ops, | |
1880 | enum target_object object, const char *annex, | |
1881 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1882 | ULONGEST offset, LONGEST len) | |
1883 | { | |
bb00b29d TG |
1884 | struct inferior *inf = current_inferior (); |
1885 | ||
1886 | inferior_debug | |
854f4b0e TG |
1887 | (8, _("darwin_xfer_partial(%s, %d, rbuf=%s, wbuf=%s) pid=%u\n"), |
1888 | core_addr_to_string (offset), (int)len, | |
1889 | host_address_to_string (readbuf), host_address_to_string (writebuf), | |
1890 | inf->pid); | |
a80b95ba | 1891 | |
f00c55f8 TG |
1892 | switch (object) |
1893 | { | |
1894 | case TARGET_OBJECT_MEMORY: | |
1895 | return darwin_read_write_inferior (inf->private->task, offset, | |
1896 | readbuf, writebuf, len); | |
1897 | case TARGET_OBJECT_DARWIN_DYLD_INFO: | |
1898 | if (writebuf != NULL || readbuf == NULL) | |
1899 | { | |
1900 | /* Support only read. */ | |
1901 | return -1; | |
1902 | } | |
1903 | return darwin_read_dyld_info (inf->private->task, offset, readbuf, len); | |
1904 | default: | |
1905 | return -1; | |
1906 | } | |
a80b95ba | 1907 | |
a80b95ba TG |
1908 | } |
1909 | ||
1910 | static void | |
1911 | set_enable_mach_exceptions (char *args, int from_tty, | |
1912 | struct cmd_list_element *c) | |
1913 | { | |
bb00b29d | 1914 | if (!ptid_equal (inferior_ptid, null_ptid)) |
a80b95ba | 1915 | { |
bb00b29d | 1916 | struct inferior *inf = current_inferior (); |
a80b95ba TG |
1917 | exception_mask_t mask; |
1918 | kern_return_t kret; | |
1919 | ||
1920 | if (enable_mach_exceptions) | |
1921 | mask = EXC_MASK_ALL; | |
1922 | else | |
1923 | { | |
bb00b29d TG |
1924 | darwin_restore_exception_ports (inf->private); |
1925 | mask = EXC_MASK_SOFTWARE | EXC_MASK_BREAKPOINT; | |
a80b95ba | 1926 | } |
bb00b29d | 1927 | kret = task_set_exception_ports (inf->private->task, mask, darwin_ex_port, |
a80b95ba TG |
1928 | EXCEPTION_DEFAULT, THREAD_STATE_NONE); |
1929 | MACH_CHECK_ERROR (kret); | |
1930 | } | |
1931 | } | |
1932 | ||
bb00b29d TG |
1933 | static char * |
1934 | darwin_pid_to_exec_file (int pid) | |
1935 | { | |
1936 | char *path; | |
1937 | int res; | |
1938 | ||
1939 | path = xmalloc (MAXPATHLEN); | |
1940 | make_cleanup (xfree, path); | |
1941 | ||
1942 | res = proc_pidinfo (pid, PROC_PIDPATHINFO, 0, path, MAXPATHLEN); | |
1943 | if (res >= 0) | |
1944 | return path; | |
1945 | else | |
1946 | return NULL; | |
1947 | } | |
1948 | ||
1949 | static ptid_t | |
1950 | darwin_get_ada_task_ptid (long lwp, long thread) | |
1951 | { | |
1952 | int i; | |
1953 | darwin_thread_t *t; | |
1954 | int k; | |
1955 | struct inferior *inf = current_inferior (); | |
1956 | kern_return_t kret; | |
1957 | mach_port_name_array_t names; | |
1958 | mach_msg_type_number_t names_count; | |
1959 | mach_port_type_array_t types; | |
1960 | mach_msg_type_number_t types_count; | |
1961 | long res = 0; | |
1962 | ||
1963 | /* First linear search. */ | |
1964 | for (k = 0; | |
1965 | VEC_iterate (darwin_thread_t, inf->private->threads, k, t); | |
1966 | k++) | |
1967 | if (t->inf_port == lwp) | |
1968 | return ptid_build (ptid_get_pid (inferior_ptid), 0, t->gdb_port); | |
1969 | ||
1970 | /* Maybe the port was never extract. Do it now. */ | |
1971 | ||
1972 | /* First get inferior port names. */ | |
1973 | kret = mach_port_names (inf->private->task, &names, &names_count, &types, | |
1974 | &types_count); | |
1975 | MACH_CHECK_ERROR (kret); | |
1976 | if (kret != KERN_SUCCESS) | |
1977 | return null_ptid; | |
1978 | ||
1979 | /* For each name, copy the right in the gdb space and then compare with | |
1980 | our view of the inferior threads. We don't forget to deallocate the | |
1981 | right. */ | |
1982 | for (i = 0; i < names_count; i++) | |
1983 | { | |
1984 | mach_port_t local_name; | |
1985 | mach_msg_type_name_t local_type; | |
1986 | ||
1987 | /* We just need to know the corresponding name in gdb name space. | |
1988 | So extract and deallocate the right. */ | |
1989 | kret = mach_port_extract_right (inf->private->task, names[i], | |
1990 | MACH_MSG_TYPE_COPY_SEND, | |
1991 | &local_name, &local_type); | |
1992 | if (kret != KERN_SUCCESS) | |
1993 | continue; | |
1994 | mach_port_deallocate (gdb_task, local_name); | |
1995 | ||
1996 | for (k = 0; | |
1997 | VEC_iterate (darwin_thread_t, inf->private->threads, k, t); | |
1998 | k++) | |
1999 | if (t->gdb_port == local_name) | |
2000 | { | |
2001 | t->inf_port = names[i]; | |
2002 | if (names[i] == lwp) | |
2003 | res = t->gdb_port; | |
2004 | } | |
2005 | } | |
2006 | ||
2007 | vm_deallocate (gdb_task, (vm_address_t) names, | |
2008 | names_count * sizeof (mach_port_t)); | |
2009 | ||
2010 | if (res) | |
2011 | return ptid_build (ptid_get_pid (inferior_ptid), 0, res); | |
2012 | else | |
2013 | return null_ptid; | |
2014 | } | |
2015 | ||
2016 | static int | |
2017 | darwin_supports_multi_process (void) | |
2018 | { | |
2019 | return 1; | |
2020 | } | |
2021 | ||
c381a3f6 JB |
2022 | /* -Wmissing-prototypes */ |
2023 | extern initialize_file_ftype _initialize_darwin_inferior; | |
2024 | ||
a80b95ba | 2025 | void |
bb00b29d | 2026 | _initialize_darwin_inferior (void) |
a80b95ba TG |
2027 | { |
2028 | kern_return_t kret; | |
2029 | ||
a80b95ba TG |
2030 | gdb_task = mach_task_self (); |
2031 | darwin_host_self = mach_host_self (); | |
2032 | ||
2033 | /* Read page size. */ | |
2034 | kret = host_page_size (darwin_host_self, &mach_page_size); | |
2035 | if (kret != KERN_SUCCESS) | |
2036 | { | |
2037 | mach_page_size = 0x1000; | |
2038 | MACH_CHECK_ERROR (kret); | |
2039 | } | |
2040 | ||
a80b95ba TG |
2041 | darwin_ops = inf_child_target (); |
2042 | ||
2043 | darwin_ops->to_shortname = "darwin-child"; | |
2044 | darwin_ops->to_longname = _("Darwin child process"); | |
2045 | darwin_ops->to_doc = | |
2046 | _("Darwin child process (started by the \"run\" command)."); | |
2047 | darwin_ops->to_create_inferior = darwin_create_inferior; | |
2048 | darwin_ops->to_attach = darwin_attach; | |
2049 | darwin_ops->to_attach_no_wait = 0; | |
2050 | darwin_ops->to_detach = darwin_detach; | |
2051 | darwin_ops->to_files_info = darwin_files_info; | |
bb00b29d | 2052 | darwin_ops->to_wait = darwin_wait_to; |
a80b95ba TG |
2053 | darwin_ops->to_mourn_inferior = darwin_mourn_inferior; |
2054 | darwin_ops->to_kill = darwin_kill_inferior; | |
2055 | darwin_ops->to_stop = darwin_stop; | |
bb00b29d | 2056 | darwin_ops->to_resume = darwin_resume_to; |
a80b95ba TG |
2057 | darwin_ops->to_thread_alive = darwin_thread_alive; |
2058 | darwin_ops->to_pid_to_str = darwin_pid_to_str; | |
bb00b29d | 2059 | darwin_ops->to_pid_to_exec_file = darwin_pid_to_exec_file; |
a80b95ba TG |
2060 | darwin_ops->to_load = NULL; |
2061 | darwin_ops->deprecated_xfer_memory = darwin_xfer_memory; | |
2062 | darwin_ops->to_xfer_partial = darwin_xfer_partial; | |
bb00b29d TG |
2063 | darwin_ops->to_supports_multi_process = darwin_supports_multi_process; |
2064 | darwin_ops->to_get_ada_task_ptid = darwin_get_ada_task_ptid; | |
a80b95ba TG |
2065 | |
2066 | darwin_complete_target (darwin_ops); | |
2067 | ||
2068 | add_target (darwin_ops); | |
2069 | ||
2070 | inferior_debug (2, _("GDB task: 0x%lx, pid: %d\n"), mach_task_self (), | |
2071 | getpid ()); | |
2072 | ||
2073 | add_setshow_zinteger_cmd ("darwin", class_obscure, | |
2074 | &darwin_debug_flag, _("\ | |
2075 | Set if printing inferior communication debugging statements."), _("\ | |
2076 | Show if printing inferior communication debugging statements."), NULL, | |
2077 | NULL, NULL, | |
2078 | &setdebuglist, &showdebuglist); | |
2079 | ||
2080 | add_setshow_boolean_cmd ("mach-exceptions", class_support, | |
2081 | &enable_mach_exceptions, _("\ | |
2082 | Set if mach exceptions are caught."), _("\ | |
2083 | Show if mach exceptions are caught."), _("\ | |
2084 | When this mode is on, all low level exceptions are reported before being\n\ | |
2085 | reported by the kernel."), | |
2086 | &set_enable_mach_exceptions, NULL, | |
2087 | &setlist, &showlist); | |
2088 | } |